This is all true Pete but my Marder use`s exactly the same motors as your Valentine also at 12v moving the same weight at about the same speed and the Marder has experienced many a bananas moment recently, My leopard has only recently lost the plot as far as speed control is concerned, I believe that after a certain amount of time sabertooths esc`s just go nuts. The marder sabertooth in particular has developed a disliking for the elevate servo,when this servo is disconnected the Marder operates perfectly fine ,reconnect the servo ( that has been in the tank for about 10 battles and worked reasonably well ) and the damm thing has a mind of its own. Im pleased to see that T055 with its sabertooth still works perfectly well, this may be because its amp draw is very low that its sabertooth hasent had the zap to send it loopy yet ,who knows. The sabertooth in the jeep ( SVo12 ) has also picked up this frustrating erratic trait and now doesnt work for very long . What I will say to anyone thinking of buying a sabertooth for main drive is dont , buy something else.
Neil R On Sep 30, 1:47 pm, Pete Arundel <[email protected]> wrote: > Neil is using drill motors which are 24v, 180w and about 2" in > diameter and maybe 4" long. > > My motors are 12v, 180w golf caddy motors with integral gearboxes. > They're considerably bigger than Neils motors being 3" in diameter and > about 7" long. > > They stay quite cool and probably don't need the cooling fans that are > installed. I am going to try them at 18v over the winter to see how it > goes. > > On Sep 29, 10:14 pm, [email protected] wrote: > > > > > In a message dated 9/29/2010 3:02:50 P.M. Eastern Daylight Time, > > > [email protected] writes: > > > There is a data sheet for it avialbale > > here;http://www.technobotsonline.com/index.php?dispatch=attachments.getfil... > > hment_id=82 > > > That said, I wouldn't recommend using it. Although I use a 2x25 > > sabretooth in my own tank - and have had no problems at all - they > > haven't been reliable when used close to their voltage and current > > limits. Neil's Leopard has always had problems with it's sabretooth > > overheating when used with 24v - but he uses drill motors and they are > > quite highly stressed. Using my unstressed, 12v 180w motors has caused > > no problems so far. I have bolted a cooling fan directly to the > > heatsink, however. > > > when you say unstressed motors, are they direct drive or are the geared > > down? but i also see your runing 12 volts where he is running 24 volts (i > > wonder how it would work with 18 volts..........) > > > Chris, > > _Odyssey Slipways_ (http://hometown.aol.com/odysseyslipways/index.html) -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat
